Let's Encrypt temporarily halted certificate issuance due to a potential incident involving cross-signed certificates between their Generation X and Y roots. The issue specifically affected 'tlsserver' and 'shortlived' ACME certificate profiles. Service has since been restored by switching back to the Generation X root certificate.
Background
Let's Encrypt is a widely used certificate authority that provides free SSL/TLS certificates, enabling HTTPS encryption for millions of websites. Certificate authorities are critical internet infrastructure that help secure web communications.
- Source
- Lobsters
- Published
- May 9, 2026 at 04:54 AM
- Score
- 7.0 / 10